11221404144 has 40 divisors (see below), whose sum is σ = 29695672272. Its totient is φ = 3649236480.

The previous prime is 11221404127. The next prime is 11221404193. The reversal of 11221404144 is 44140412211.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2848999 + ... + 2852934.

Almost surely, 2^11221404144 is an apocalyptic number.

It is an amenable number.

11221404144 is an abundant number, since it is smaller than the sum of its proper divisors (18474268128).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11221404144 is a wasteful number, since it uses less digits than its factorization.

11221404144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5701985 (or 5701979 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 24.

Adding to 11221404144 its reverse (44140412211), we get a palindrome (55361816355).

The spelling of 11221404144 in words is "eleven billion, two hundred twenty-one million, four hundred four thousand, one hundred forty-four".